Solar Installer Sues for U.S. Grant Funds

In Turnabout Amid U.S. Inquiry, SolarCity Says Treasury Came Up Short on Promised Aid

By

Cassandra Sweet And

Ryan Tracy

Updated May 6, 2013 8:18 p.m. ET

Last July, federal investigators subpoenaed SolarCity Corp., the largest installer of residential solar panels, as part of a probe into whether solar-power companies received excessive government grants.

Now, SolarCity is pushing back with a lawsuit that alleges the opposite: some of the taxpayer-funded grants it received weren't as big as originally promised.